Window regulator



Dec. 12, 1933.

Filed Oct. 3, 1930 E. L. `ACKERMAN EVAL WINDOW REGULATOR 2 Sheets-Sheet l ml nunnzlllllll.-

INVENTORS fda/afa L, Hoe/ma/z.

ATTORNEY E. L. ACKERMAN El' AL Dec. 12, 1933.

WINDOW REGULATOR File@ oct. s, 195o l 2 Sheets-Sheet 2 INVENTORS fda/ard Z Heter/nan.

ATTORNEY Patented Dec. 12, 1933" PATENT OFFICE 1,939,245 WINDOW REGULATOR Edward L. Ackerman and Alois J. Zwierz'ina,

Detroit, Mich., assignors to Ackerman-Blaesser-Fezzey, Inc., Detroit, Mich., a corporation of Michigan Application October 3, 1930. Serial No. 486,198

2 Claims.

This invention relates to window regulators and the object of the invention is to provide a regulator which is provided with spring actuated means for supporting the weight of a sash while it is raised or lowered.

Another object of the invention is to provide a window regulator for supporting heavy bullet proof glass in the window opening of an automobile body and arranged so that the springs supporting the weight of the glass may be adjusted in tension durirg assembly.

Another object of the invention is to provide a window regulator operated through means of a pair of inter-meshing gears provided with springs for assisting in supporting the weight of the sash, Va companion gear being provided meshing with each of the rst named pair of gears and each carrying an additional spring for assisting in supporting the weight of the sash.

A further object of the invention is to provide a window regulator having a pair of main gears for raising and lowering the sash and a pair of auxiliary gears provided with spring means for assisting in supporting the weight of the sash.

These objects and the several novel features of the invention are hereinafter more fully described and claimed and the preferred form of construction by which these objects are attained is shown in the accompanying drawings in which l Fig. 1 is an elevation of an automobile door equipped with my improved window regulator.

Fig. 2 is an enlarged elevation of the regulator showing the sash in the raised position.

Fig. 3 is a similar View showing the sash in the lowered position. c,

Fig. 4 is an edge view of the window regulator.

Fig.,5 is an enlarged vsection taken on line 5 5 of Fig. 2.

Fig. 6 is a section taken on line 6 6 of Fig. 2.

Fig. 7 is a section taken on line 7 7 of Fig. 2.

Fig. 8 is a section taken on line 8 8 of Fig. 5.

The device comprises a plate 1, shown in Figs. 1, 2, 3 and 4, which is provided with screw apertures 2 by whichthe plate may be secured to the door frame. Mounted on the plate 1, as shown in Figs. 2 and 4, is a housing 3 containing a small gear (not here shown) which meshes with the gear 4 which is rotatably mounted on the plate 1. The small gear in the housing 3 may be driven in either direction by rotating the crank shaft 5 to which the crank 6 is 'secured asshown in Fig.. 1. This rotates the gear 4 and the gear 4 is provided with a stud shaft 7 extending through the plate 1 as shown in Fig. 6 and having a small pinion gear 8 secured thereto on the opposite side of the plate 1 from the. gear 4. The gear 8 meshes with a gear 9 and is 60 provided with a flange extending over the edge of the gear 9 and preventing it from coming out of mesh with the gear 8. The gear 9, as shown in Fig. 2, meshes with agear 10 and each of these gears is provided with a stud shaft 11 extending through the plate 1 having a slot in which one end of a coiled spring 12 is secured. The opposite end of each of ,these coiled springs 12 is secured in a slotted stud 13 mounted in the plate 1.

The two coiled springs 12- for the gears 9 and 10 are in at spiral form and are coiled in opposite directions so as to assist rotation of the gears 9 and 10 in raising the arms 14 and to resist `downward movement of the arms 14. As shown in Fig. 5, each arm 14 is secured to the respective gear 9 or 10 by means of the rivet 15 and the end of the arm 14 extends over the squared portion 16 of the stud shaft 11 as shown in Figs. 5 and 8. A bushing 18 is provided about 80 the portion of the stud shaft 11 extending through the plate 1 and gear 9 or 10. Due to the fact that the end of the arm 14 engages over the flattened portion 16 of the stud shaft 11, the stud shaft is turned with the arm 14 and as the gear 9 or 10 is secured to the arm 14 by the rivet 15, the gear will turn with the arm 14. The bushing 18 is free and may remain stationary in the plate 1 or may rotate with the stud shaft 11 and gear 9 or 10.

The device is operated by rotating the crank 6 in either direction. For instance, by rotating the crank 6 in a counter-clockwise direction the gear 4 is rotated in a clockwise direction thus rotating the gear 8 in a clockwise direction and rotating 95 the gear 9 in a counter-clockwise direction. As the gear 9 meshes with the gear 10, the gear 10 is rotated in a clockwise direction. This rotation of the gears 9 and 10 turns the arms 14 from the position shown in Fig. 2 to that shown in Fig. 3 100 and this movement of the arms 14 and gears 9 and 10 winds up the springs 12 which resist this rotative movement of the said gears and arms. When the arms are in the position shown in Fig. 3 the crank 6 may be rotated in a clockwise 105 direction which raises the arms `14 and this upward movement. of the arms 14 is assisted by the coiled springs 12 which tend to uncoil and raise these arms and thus assist in supporting the weight of the sash.

These rollers thus support the sash and upward or downward movement of the arms 14 raises or lowers the sash and glass carried thereby. As

this regulator is designed for use in'raising and lowering a heavy glass such as laminated bullet proof glass, it is necessary to provide additional means for supporting the weight of thefsash and for this reason'a gear 21 is rotatably mounted in the plate 1 and meshes with the gear 9 and a similar gear 22 is rotatably mounted in the plate 1 and meshes with the gear 10, but the gears 21 and 22 are positioned so as to not mesh with each other. The gears 21 and 22 are each provided with a stud 23 extending through the plate 1 and provided with a slotted end in which one end of the respective coiled spring 24 is secured while the opposite .end of each coiled spring is secured in a slotted stud 29which is secured to the plate 1.

` The springs 24 for the two gears 21 and 22 are coiled in oppositeI directions. Upon downward movement of the arms 14 the gears 9 and 10 are turned in opposite directions and the gears 21 and 22'which mesh therewith are also turned in opposite directions. As the arms are lowered from the position shown in Fig. 2 to thatshown in Fig. 3, the gears 21 and 22 are turned to wind up or more tightly coil the springs 24, while upon movement of the arms 14 upwardly from the position shown in Fig. 3 to that shown in Fig. 2 the coiled springs 24 tend to uncoil and thus assist in turning the gears 9 and 10 and the arms 14 secured thereto.

By this arrangement the additional springs 24 assist in raising and supporting the sash and cooperate with the coiled springs 12 which have the same action. By providing a set of four springs, as shown, the weightl of the sash is counterbalanced so that rotation of the crank shaft 6 is even throughout the movement of the window glass from the open to the vclosed position and from the closed to the open position.

The tension of the springs 24 may be adjusted during assembly of the device by lifting the gears 21 and 22 out of mesh with the gears 9 and 10 and turning them until the tension of the springs 24 is at the desired point, at which time the gears 21 and 22 may be moved back into mesh with the gears 9 and 10. To prevent the gears from coming out of mesh again a series of three buttons 25', 26 and 27 are rotatably mounted in the plate 1 where the different gears come into mesh and these buttons are each provided with a flange 28 extending over the adjacent gears and holding them in mesh as shown in Figs. 2, 3, 4 and 7.

From the foregoing description it becomes evident that the device is very simple and efllcient in operation, will not easily get out of order, will readily support an extra-heavy glass and sash and provides a device which accomplishes the objects described.-

Having thus fully described our invention, its utility and mode of operation, what we claim and desire to secure by Letters Patent of the United States is- I1. In a window regulator having a gear and an associated arm for engaging a sash and operable to raise or lower the same, a counterbalance mechanism therefor comprising a second gear in mesh with said first named gear, and a counterbalancing spring of spiral form having one end attached to the second gear and the opposite end held in stationary relation so that the spring is increased in tension through rotation of the gear upon lowering the sash.

2. In a window regulator having a pair of gears and a pair of associated arms for engaging a sash and operable to raise or lower the same, a counterbalancing mechanism therefor comprising a second gear meshing respectively with each of the rst named gear`s thereon, and a coiled spring associated with each of the said second gears and so arranged that each is increased in tension through lowering of the sash by the said arms to thereby tend to rotate the gears in a direction to cause the arms to raise the sash.

EDWARD L. ACKERMAN.

ALOIS J. ZWIERZINA. 

